Hmm I don't think I have any line of sight on any barbs in my crashed game. And I did try loading back various amounts of turns and moving units differently and also just space barring all units for several turns, still crashed.
endejan were your barbs in the water? I wonder if it is the same bug as this crash here where dennis says it's the world wrap, but instead of being a players unit it's a barb crashing on the world wrap?
http://forums.civfanatics.com/showthread.php?t=501087
OP here...I would change the title if I knew how, so if you don't mind showing me how, I'd appreciate it. Or a mod could change it. thanks for all the replies. Good to know I'm not the only one with this problem.